<template>
	<view>
	<view class="search-box">
	<!-- 使用 uni-ui 提供的搜索组件 -->
	<uni-search-bar @input="input" :radius="100" cancelButton="none" bgColor="#C00000"></uni-search-bar>
	</view>
	<!-- 搜索建议列表 -->
	<view class="sugg-list" v-if="searchResults.length!==0">
	<view class="sugg-item" v-for="(item, i) in searchResults" :key="i"
	@click="gotoDetail(item.goods_id)">
	<view class="goods-name">{{item.goods_name}}</view>
	<uni-icons type="arrowright" size="16"></uni-icons>
	</view>
	</view>
	<!-- 搜索历史 -->
	<view class="history-box" v-else>
	<!-- 标题区域 -->
	<view class="history-title">
	<text>搜索历史</text>
	 <uni-icons type="trash" size="17" @click="cleanHistory"></uni-icons>
	</view>
	<!-- 列表区域 -->
	<view class="history-list">
	<uni-tag :text="item" v-for="(item, i) in historys" :key="i"
	@click="gotoGoodsList(item)"></uni-tag>
	</view>
	</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				timer:null,
				kw:'',
				// 搜索结果列表
				searchResults: [],
				// 搜索关键词的历史记录
				historyList: ['a', 'app', 'apple']
			};
		},
		onLoad() {
			this.historyList = JSON.parse(uni.getStorageSync('kw') || [])
		},
		methods:{
			input(e)
			{
				clearTimeout(this.timer)
				this.timer=setTimeout(()=>{
					this.kw = e
					this.getSearchList()
				},500)
			},
			async getSearchList()
			{
				if(this.kw === '')
				{
					this.searchResults = []
					return
				}
				else{
					const { data: res } = await
					uni.$http.get('/api/public/v1/goods/qsearch', { query: this.kw })
					if (res.meta.status !== 200) return uni.$showMsg()
					this.searchResults = res.message
					this.saveSearchHistory()
				}
			},
			gotoDetail(goods_id) {
			uni.navigateTo({
			// 指定详情页面的 URL 地址，并传递 goods_id 参数
			url: '/subpkg/goods_detail/goods_detail?goods_id=' + goods_id
			})
			},
			saveSearchHistory()
			{
				//this.historyList.push(this.kw)
				const set = new Set(this.historyList)
				set.delete(this.kw)
				set.add(this.kw)
				this.historyList = Array.from(set)
				//把数据存储到本地
				uni.setStorageSync('kw',JSON.stringify(this.historyList))
			},
			//清空历史记录
			cleanHistory(){
				uni.setStorageSync('kw',[])
				this.historyList = []
			},
			// 点击跳转到商品列表页面
			gotoGoodsList(kw) {
			uni.navigateTo({
			url: '/subpkg/goods_list/goods_list?query=' + kw
			})
			}
		},
		computed:{
		  historys()
		  {
			  return [...this.historyList].reverse()
		  }
		}
	}
</script>

<style lang="scss">
.search-box{
		position: sticky;
		top: 0;
		z-index: 999;
	}
.sugg-list {
padding: 0 5px;
.sugg-item {
font-size: 12px;
padding: 13px 0;
border-bottom: 1px solid #efefef;
display: flex;
align-items: center;
justify-content: space-between;
.goods-name {
// 文字不允许换行（单行文本）
white-space: nowrap;
// 溢出部分隐藏
overflow: hidden;
// 文本溢出后，使用 ... 代替
text-overflow: ellipsis;
margin-right: 3px;
}
}
}
.history-box {
padding: 0 5px;
.history-title {
display: flex;
justify-content: space-between;
align-items: center;
height: 40px;
font-size: 13px;
border-bottom: 1px solid #efefef;
}
.history-list {
display: flex;
flex-wrap: wrap;
.uni-tag {
	margin-top: 5px;
	margin-right: 5px;
	}
	}
	}
</style>
